Segment Information - Additional Information (Detail) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) Segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment									3
Business combinations net income (loss) during period from acquired business	$ 3,063	$ 4,147	$ 2,031	$ (1,299)	$ (25,015)	$ 4,630	$ 6,953	$ 6,001
Amortization of backlog intangibles									$ 26,205	$ 13,043
Autocam [Member]
Segment Reporting Information [Line Items]
Business combinations revenue during period from acquired business											$ 80,800
Business combinations net income (loss) during period from acquired business											3,700
Increase in cost of sales for inventory step-up											1,200
PEP [Member]
Segment Reporting Information [Line Items]
Business combinations revenue during period from acquired business										40,700
Business combinations net income (loss) during period from acquired business										(2,600)
Increase in cost of sales for inventory step-up										4,300
Amortization of backlog intangibles									$ 19,700	5,200
Corporate and Consolidations [Member] | Autocam [Member]
Segment Reporting Information [Line Items]
Non-recurring costs related to the merger with PEP, Autocam and the other three acquisitions										10,900	9,800
Corporate and Consolidations [Member] | Other Acquisitions [Member]
Segment Reporting Information [Line Items]
Non-recurring costs related to the merger with PEP, Autocam and the other three acquisitions										10,900	9,800
Corporate and Consolidations [Member] | PEP [Member]
Segment Reporting Information [Line Items]
Non-recurring costs related to the merger with PEP, Autocam and the other three acquisitions										$ 10,900	$ 9,800